Moved redis related tests to databases #425

Job	Run time
Data Processing (latest) (3.5, ubuntu-20.04)	1m 7s
Data Processing (latest) (3.7, ubuntu-20.04)	1m 18s
Data Processing (latest) (3.8, ubuntu-20.04)	1m 30s
Data Processing (pinned) (3.5, ubuntu-20.04)	3m 8s
Data Processing (latest) (3.11, ubuntu-20.04)	4m 7s
Data Processing (pinned) (3.6, ubuntu-20.04)	1m 22s
Data Processing (latest) (3.12, ubuntu-20.04)	2m 10s
Data Processing (py27)	3m 35s
Data Processing (pinned) (3.7, ubuntu-20.04)	2m 53s
Data Processing (pinned) (3.8, ubuntu-20.04)	1m 54s
Data Processing (pinned) (3.9, ubuntu-20.04)	1m 5s
Data Processing (pinned) (3.10, ubuntu-20.04)	1m 27s
Data Processing (pinned) (3.11, ubuntu-20.04)	2m 31s
Data Processing (pinned) (3.12, ubuntu-20.04)	1m 20s
All Data Processing tests passed	1s
	29m 28s

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